催化学报

催化学报 ›› 2013, Vol. 34 ›› Issue (5): 949-955.DOI: 10.1016/S1872-2067(12)60560-9

• 研究论文 • 上一篇    下一篇

三维有序大孔CdS/TiO2薄膜的制备及其可见光催化性能

陈晓芳, 张佳, 霍宇凝, 李和兴   

  1. 上海师范大学化学系, 上海 200234
  • 收稿日期:2013-01-06 修回日期:2013-05-20 出版日期:2013-05-06 发布日期:2013-05-06
  • 通讯作者: 霍宇凝,李和兴
  • 基金资助:

    国家自然科学基金(20937003,21261140333,21237003,21207091);上海市科委项目(11JC1409000,12230706000);上海市教委创新项目(12YZ091).

Preparation and visible light catalytic activity of three-dimensional ordered macroporous CdS/TiO2 films

CHEN Xiaofang, ZHANG Jia, HUO Yuning, LI Hexing   

  1. Department of Chemistry, Shanghai Normal University, Shanghai 200234, China
  • Received:2013-01-06 Revised:2013-05-20 Online:2013-05-06 Published:2013-05-06
  • Supported by:

    This work was supported by National Natural Science Foundation of China (20937003, 21261140333, 21237003, and 21207091) and Shanghai Government (11JC1409000, 12230706000, and 12YZ091).

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摘要：

采用胶体晶体模板辅助溶胶-凝胶法以及S2-离子交换法合成了三维有序大孔CdS/TiO2膜.结果表明,该薄膜材料在可见光催化降解污染水中罗丹明B和对氯苯酚的反应中表现出高活性.这可归因于修饰剂CdS的光敏化作用实现可见光催化,CdS-TiO2之间形成了异质结,促进了电子和空穴的分离; 另一方面,有序大孔结构有利于光的利用以及反应物的扩散和吸附.

关键词: 硫化镉/二氧化钛薄膜, 三维有序大孔结构, 可见光, 光催化

Abstract:

A three-dimensional ordered macroporous CdS/TiO2 film was prepared by the sol-gel method with a colloidal crystal template and S2- ion exchange, and it exhibited high visible light photocatalytic activity for the aqueous degradation of rhodamine B and 4-chlorophenol. The modification with CdS gave visible light absorption by photosensitization and better separation of photo-induced electrons and holes. The ordered macroporous structure gave higher light utilization and faster reactant transport.

Key words: CdS/TiO2 film, Three-dimensional ordered macro-porous structure, Visible light, Photocatalysis